US7140228B2 - Roller bearings equipped with sensors - Google Patents

Roller bearings equipped with sensors Download PDF

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Publication number
US7140228B2
US7140228B2 US10/511,063 US51106304A US7140228B2 US 7140228 B2 US7140228 B2 US 7140228B2 US 51106304 A US51106304 A US 51106304A US 7140228 B2 US7140228 B2 US 7140228B2
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United States
Prior art keywords
region
antifriction
bearing
sensors
antifriction bearing
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Expired - Lifetime
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US10/511,063
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English (en)
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US20050081646A1 (en
Inventor
Jens Heim
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IHO Holding GmbH and Co KG
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FAG Kugelfischer AG
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Assigned to FAG KUGELFISCHER AG reassignment FAG KUGELFISCHER AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HEIM, JENS
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Assigned to SCHAEFFLER KG reassignment SCHAEFFLER KG CERTIFICATION Assignors: FAG KUGELFISCHER AG
Assigned to INA-SCHAEFFLER AG reassignment INA-SCHAEFFLER AG MERGER (SEE DOCUMENT FOR DETAILS). Assignors: FAG KUGELFISCHER AG & CO. OHG
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
    • G01L5/0009—Force sensors associated with a bearing
    • G01L5/0019—Force sensors associated with a bearing by using strain gages, piezoelectric, piezo-resistive or other ohmic-resistance based sensors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/52—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions
    • F16C19/522—Bearings with rolling contact, for exclusively rotary movement with devices affected by abnormal or undesired conditions related to load on the bearing, e.g. bearings with load sensors or means to protect the bearing against overload
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00—Testing of machine parts
    • G01M13/04—Bearings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C2300/00—Application independent of particular apparatuses
    • F16C2300/02—General use or purpose, i.e. no use, purpose, special adaptation or modification indicated or a wide variety of uses mentioned

Definitions

  • the present invention relates to antifriction bearings equipped with sensors, which are used in an extremely wide range of applications in order to measure the force acting on the antifriction bearings and the temperature
  • Antifriction bearings equipped with sensors have the task of measuring the operating conditions present on the antifriction bearing, in order to then be able to control or regulate the overall process of the machine arrangement by using this measured data.
  • antifriction bearings equipped with sensors are used for force measurement, measurement of the direction of rotation, rotational speed measurement and temperature measurement.
  • Such antifriction bearings equipped with sensors are also disclosed, inter alia, in U.S. Pat. No. 5,952,587. The use of strain gage sensors, for example, and the evaluation of these measured results are extensively described in the text.
  • the problem with the unit disclosed in this text is that, for antifriction bearings having a different number of antifriction elements, a different number of cables have to be led from the antifriction bearing to the evaluation unit located outside.
  • the problem is therefore that the evaluation unit has to be designed differently, depending on the antifriction elements currently used in the antifriction bearings.
  • An antifriction bearing is equipped with sensors for measuring the length change in the rolling contact between antifriction elements and the outer ring. Region vectors are formed and pass via an interface to an evaluation unit disposed outside the antifriction bearing which add region vectors from the sensors in at least three regions and determines magnitude and direction of force on the bearing.
  • the invention comprises introducing a standardized interface between the antifriction bearing and the evaluation unit.
  • This standardized interface makes it possible always to provide the same information at the interface, irrespective of the number of antifriction elements in the antifriction bearing.
  • This is achieved by the antifriction bearing being subdivided, for example, into three regions, each covering 120°. All the sensors which lie within a subdivided, e.g. 120 degree, region are evaluated by an ASIC disposed on the antifriction bearing, so that the result is a force vector in this region.
  • a region ASIC carries out a vector addition of the individual vectors which are determined by the sensors, in order to form an overall vector.
  • the force vectors from the three region ASICs are therefore continuously present at the interface between the antifriction bearing and the evaluation unit.
  • Each of the three ASICs therefore transmits an item of information which contains the magnitude of the force and the direction of the force in the respective region.
  • these three region vectors are then added vectorially and a vector which corresponds to the total loading of the antifriction bearing is thus determined.
  • the antifriction bearing may be divided up into four regions of 90 degrees each.
  • the difference as compared with the three region embodiment is that here four region ASICs are used, which determine the force vector (magnitude and direction). Otherwise, the further procedure corresponds to that described above.
  • FIG. 1 showing a side view schematically shows of an antifriction bearing.
  • An antifriction bearing incorporating the invention is conventionally comprised of an outer ring 1 , an inner ring 2 spaced radially inward of the outer ring and antifriction elements 3 between the rings.
  • nine antifriction elements are shown in the example.
  • sensors 4 , 5 are disposed, which are shown schematically. The sensors are disposed in a groove in the outer ring while the groove opens to the annular space between the rings. The sensors 4 , 5 are disposed such that the sensor spacing corresponds to half the distance between two adjacent antifriction elements.
  • the senor 5 is currently situated on the outer ring and through the groove in the outer ring is directly in rolling contact with the antifriction element below the sensor, while the sensor 4 is situated precisely between two antifriction elements.
  • the sensors 4 and 5 together constitutes a strain gage half bridge 6 .
  • Two further sensors, which are used for the temperature compensation of the two sensors 4 and 5 are disposed outside the loading zone of the antifriction bearing.
  • the region ASIC disposed in the groove in the antifriction bearing is the region ASIC which adds up the results (from the three antifriction elements in the drawing of an example, each of the respective strain gage half bridge) for one region of 120 degrees.
  • the current angular position in the 120 degree region is passed on to the region ASIC via the factors c 1 , c 2 and c 3 for region 1 , and also c 4 , c 5 and c 6 for region 2 and c 7 , c 8 and c 9 for region 3 .
  • c 1 to c 9 are scalars which correspond to the angular position of the individual sensors in a region.
  • the region ASICs then form the region vector 7 , 8 , 9 from the measured values. These region vectors (magnitude and direction) 7 , 8 , 9 are transmitted to the evaluation unit via a defined interface.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Force Measurement Appropriate To Specific Purposes (AREA)
  • Rolling Contact Bearings (AREA)
US10/511,063 2002-04-11 2003-04-10 Roller bearings equipped with sensors Expired - Lifetime US7140228B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10215929.7 2002-04-11
DE10215929A DE10215929A1 (de) 2002-04-11 2002-04-11 Wälzlager mit Sensoren
PCT/DE2003/001175 WO2003087745A2 (fr) 2002-04-11 2003-04-10 Palier a roulement muni de capteurs

Publications (2)

Publication Number Publication Date
US20050081646A1 US20050081646A1 (en) 2005-04-21
US7140228B2 true US7140228B2 (en) 2006-11-28

Family

ID=28458719

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/511,063 Expired - Lifetime US7140228B2 (en) 2002-04-11 2003-04-10 Roller bearings equipped with sensors

Country Status (5)

Country Link
US (1) US7140228B2 (fr)
EP (1) EP1493006B1 (fr)
JP (1) JP2005522656A (fr)
DE (1) DE10215929A1 (fr)
WO (1) WO2003087745A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060218935A1 (en) * 2005-03-30 2006-10-05 General Electric Company Bearing assembly and method of monitoring same
US20060218927A1 (en) * 2005-03-30 2006-10-05 General Electric Company Telemetry system
US20140157880A1 (en) * 2012-12-12 2014-06-12 Jtekt Corporation State detection device for bearing roller, roller bearing device with sensor, and wind turbine generator

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4723202B2 (ja) * 2004-03-31 2011-07-13 本田技研工業株式会社 転がり軸受の変位解析方法及び変位解析システム
WO2009076988A1 (fr) * 2007-12-18 2009-06-25 Ab Skf Unité roulement et capteur
CN102323058B (zh) * 2011-06-20 2014-04-30 河南省电力公司电力科学研究院 基于转轴应变信号的汽轮发电机组轴承载荷识别装置和方法
DE102015202127A1 (de) * 2015-02-06 2016-08-11 Schaeffler Technologies AG & Co. KG Verbindungselement zum elektrischen und mechanischen Verbinden von Elektronikmodulen, Elektronikmodulanordnung zum Einbau in einen zylindrischen Bauraum sowie Wälzlageranordnung
DE102015208444B4 (de) * 2015-05-06 2023-04-20 Aktiebolaget Skf Sensoranordnung zur Detektion einer Dehnung, Last, Temperatur, Vibration und/oder Bewegungsrichtung wenigstens eines Wälzkörpers sowie ein Wälzlager mit der Sensoranordnung
CN106500652B (zh) * 2016-11-14 2019-08-06 河海大学 一种随动多点接触式环向应变测量装置
CN111537229A (zh) * 2020-04-21 2020-08-14 西安交通大学 一种可测量轴承不同位置运行参数的轴承座装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952587A (en) 1998-08-06 1999-09-14 The Torrington Company Imbedded bearing life and load monitor

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4118933A (en) 1977-06-07 1978-10-10 Westinghouse Electric Corp. Bearing load indicator
JPS60192114A (ja) * 1984-03-13 1985-09-30 Mitsubishi Electric Corp 軸受異常検出装置
DE8435935U1 (de) 1984-12-08 1985-05-09 Skf Kugellagerfabriken Gmbh, 8720 Schweinfurt Messvorrichtung fuer kraefte
JP3856888B2 (ja) * 1997-01-31 2006-12-13 Ｎｔｎ株式会社 鉄道車両軸受異常検出装置

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5952587A (en) 1998-08-06 1999-09-14 The Torrington Company Imbedded bearing life and load monitor

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060218935A1 (en) * 2005-03-30 2006-10-05 General Electric Company Bearing assembly and method of monitoring same
US20060218927A1 (en) * 2005-03-30 2006-10-05 General Electric Company Telemetry system
US7523615B2 (en) * 2005-03-30 2009-04-28 General Electric Company Telemetry system
US7634913B2 (en) * 2005-03-30 2009-12-22 General Electric Company Bearing assembly and method of monitoring same
US20140157880A1 (en) * 2012-12-12 2014-06-12 Jtekt Corporation State detection device for bearing roller, roller bearing device with sensor, and wind turbine generator
US9127649B2 (en) * 2012-12-12 2015-09-08 Jtekt Corporation State detection device for bearing roller, roller bearing device with sensor, and wind turbine generator

Also Published As

Publication number Publication date
EP1493006B1 (fr) 2013-06-19
DE10215929A1 (de) 2003-10-23
WO2003087745A3 (fr) 2003-12-04
JP2005522656A (ja) 2005-07-28
WO2003087745A2 (fr) 2003-10-23
US20050081646A1 (en) 2005-04-21
EP1493006A2 (fr) 2005-01-05

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